Air humidifier



March 5, 1935. K. A. PROTT AIR HUMIDIFIER Filed April 5, 1935 Patented Mar. '5, 1935 1 993 299 UNITED STATES PATENT OFFICE 1,993,299 AIR nmnm'rmn Kari August Priitt, Rheydt-Bonnenbroich,

Germany Application April 5. 1933, Serial No. 664,563 In Germany April 18, 1932 Claims. (01.26141) My invention relates to air humidifiers. It is tainer E the position of which pipe determines already known to admix to the air to be humid-' the level'of the liquid in the container E. ifled a regulatable quantity of a finely divided Partitions G, Figure 2, of angular cross section liquid by means of a centrifugal wheel. Serious are mounted between the flanges a and e by 5 difliculties arise, however, in regulating this quanwhich the annular gap existing between these 5 tity of liquid. My invention has for its object two parts is subdivided so as to form four sepan apparatus of this class in which the desired arate outlets. degree of moisture of the air can be adjusted. When motor B is revolving, the fan b sucks very easily and reliably andwhich requires but air from above and presses it through the anvery little power. nular gap between the flanges a, e directly 10 In order that my invention may be clearly uninto the room where the humidifier is being derstood and readily carried into effect, an'emmounted, as it will be the case in textile shops, bodiment of my improved humidifier is schematifor instance rooms in which selfactors are workcally illustrated by way of example in the accoming, or into a special further appliance an empanying drawing, in which bodiment of which is described hereinafter. Fur- 15 Figure l is a vertical section of the humidifier, thermore a vacuuin is produced at'thesame time Figure 2 is a horizontal section thereof, within the casing b by the likewise rotating Figure 3 is a detail, on enlarged scale, centrifugal wheel D 11 whereby liquid is sucked Figure 4 is a vertical section of the complete from the container E to the casing b through the humidifying installation, and pipe C. By centrifugal action and adhesion this 20 Figure 5 is a top view corresponding. to Figliquid is raised up into the pipe arms I) and ure 4. spread radially outward by them against the baf- "Referring first to Figures 1 to 3, A denotes a fie plates b. On these plates the liquid is atomcylindrical hollow body or drum having a plane ized and mixed with the air supplied from above outer bottom flange a with a slightly upward by the fan b the mixture then striking the guide 25 bent outer portion a In the drum A is mounted blades d by which it is further atomized and vertically an electric motor B with the shaft of humidifies the air around the apparatus. The which is directly coupled a fan b adapted to coarser drops of liquid which owing to the mixsuck air into drum A from above. The shaft of ture being spread vertically fan-like, strike the motor B has rigidly mounted to its lower end a surfaces of the flanges a and e, are retained 30 casing b which has a cylindrical or (as shown) by these surfaces, while the drops that escape tapered lower end into which opens from below horizontally are retained by the bent guide blades a pipe C rigid thereto. The casing b hasmountd. The liquid thus collecting on these surfaces ed on it a number of curved centrifugal pipes b a e and d can flow back to the liquid consituated in a common horizontal plane, the'whole tainer E through the gap existing between disc 35 thus forming a centrifugal wheel which is driven D and flange e without being hindered in any by the motor B. In front of the outer opening way by the air current.

of each pipe I) is mounted a baiiie plate 12*, When passing through'the pipe arms b the see best Figure 2. To the bottom flange a of drum liquid owing to its inertia" flows only along one 49 A is fixed at a certain distance apart therefrom side of the pipe, as shown in Figure 3, so that a circular sheet metal disc D having a downward the suction efiect of the centrifugal wheel is not tubular extension it into which projects the casdetracted.

' ing b Bet-ween the flange a and the disc D are The suction height, Figure 1, of the apparaprovided near the outer edge vertical guide tus is adjusted by setting the overflow pipe F blades 11 which have suitable bent shape, see to which end any suitable'means, for example Figure 2. The flange a a and disc D thus form screw thread, may be provided. With uniform I together a casing in which the centrifugal wheel rate of revolutions of the fan b the delivered I) b may revolve.- liquid quantity-then depends only still upon the The extension d and the pipe C project into a suction height.

50 liquid container E spacedly fixed tothe underside Figures 4 and 5 show the apparatus described 50 of disc D and having a slightly inwardly inclined hereinbefore in connection with an appliance large edge e an annular gap being left between intended to moisten aprons of textile material, disc D and edge e Finally, a liquid feed pipe e, paper, felt or the like.

Figure 1, opens into the edge e and an overflow The humidifier B A E has attached to it two pipe F is adjustably arranged on the liquid congradually enlarging channels H, H which open 55 each into an equalizing vessel K of rectangular cross section. Each of these vessels carries a cap M which at top has a gap m corresponding in length to that of the respective vessel K. Guide plates N may further be provided in the channels H, see Figure 5.

The moistened air delivered by the apparatus to the vessels K has throughout equal pressure and, consequently, escapes at all places of the gaps m at uniform velocity. I attain in this manner with certainty a uniform humidification of the apron P which is moved over the gaps m at uniform regulatable speed by suitable guiding means known in the art.

What I claim and desire to secure by Letters Patent is:-

1. A humidifier comprising a fan, a closed channel adapted'to receive the air delivered by said fan, guide blades in said channel, a centrifugal wheel adapted to cast a liquid and arranged within said channel, said centrifugal wheel having a hollow shaft and tubes extending radially from said shaft, a baffle plate arranged in front of each of said tubes, and a liquid container arranged below said wheel, the hollow shaft of the latter dipping in said container.

2. A humidifier comprising a fan, a closed channel adapted toreceive the air delivered by said fan, guide blades in said channel, a centrifugal wheel adapted to cast a liquid and arranged within said channel, said centrifugal wheel having a hollow shaft and tubes extending radially from said shaft, a battle plate arranged in front of each of said tubes, and a liquid container arranged below said wheel, the hollow shaft of the latter dipping in said container, and a regulatable overflow pipe provided in connection with said liquid container.

3. A humidifier comprising a fan, a closed channel adapted to receive the air delivered by said fan, guide blades in said channel, a centrifugal wheel adapted to cast a liquid and arranged within said channel, said centrifugal wheel having a hollow shaft and tubes extending radially from said shaft, a baffle plate arranged in front of each of said tubes, and a liquid container arranged below said wheel, the hollow shaft of the latter dipping in said container, a regulatable overflow pipe provided in connection with said liquid container, and a motor adapted to drive both said fan and said centrifugal wheel.

4. A humidifier comprising a fan, a closed channel adapted to receive the air' delivered by said fan, guide blades in said channel, a centrifugal wheel adapted to cast a liquid and arranged within said channel, said centrifugal wheel having a hollow shaft and tubes extending radially from said shaft, a battle plate arranged in front of each of said tubes, and a liquid container arranged below said wheel, the hollow shaft of the latter dipping in said container, a regulatable overflow pipe provided in connection with said'liquid container, and at least one collecting vessel for the humidified air delivered, said vessel having a gap-shaped outlet opening.

5. A humidifier comprising a fan, a closed channel adapted to receive the air delivered by said fan, guide blades in said channel, a centrifugal wheel adapted to cast a liquid and arranged within said channel, said centrifugal Wheel having a hollow shaft and tubes extending radially'from said shaft, a baffle plate arranged in front of each of said tubes, and a liquid container arranged below said wheel, the hollow shaft of the latter dipping in said container, a regulatable overflow pipe provided in connection with said liquid container, and at least one collecting vessel for the humidified air delivered, said vessel having a gap-shaped outlet opening, and guiding partitions provided in said vessel.

KARL AUGUST Pm'i'rr. 

